Unexplained Syncope With the λ Pattern in Electrocardiogram:a Case Report
10.3969/j.issn.1000-3614.2023.12.012
- VernacularTitle:不明原因晕厥伴λ波一例
- Author:
Guangqiang WANG
1
;
Fan YU
;
Shu ZHONG
;
Qinqin WANG
;
Xiaoyi LI
Author Information
1. 青岛大学附属烟台毓璜顶医院 心内科,烟台 264000
- Keywords:
coronary artery spasm;
λ waveform;
atrioventricular block
- From:
Chinese Circulation Journal
2023;38(12):1302-1304
- CountryChina
- Language:Chinese
-
Abstract:
The λ pattern is a rare electrocardiogram feature in clinical practice,which often indicates the occurrence of impending fatal ventricular tachyarrhythmias or sudden cardiac death.In this case,Holter monitoring recorded a progressive evolution of the λ pattern followed by advanced atrioventricular blocks in a patient with chest pain accompanied by syncope.λ sign occurred at the time of chest pain,and advanced atrioventricular blocks were recorded at the time of subsequent syncope.Coronary stenosis was detected in the left circumflex by coronary angiography.The patient recovered after stent implantation in the culprit vessel and related medications to prevent coronary spasm.Our case indicate that the λ pattern could occur prior advanced atrioventricular blocks-induced syncope in patient with ischemic heart disease.
